Physics 1 · Unit 8: Electric Charge and Electric Force
Coulomb Force Between Charges
Two point charges, q₁ = +3.0 μC and q₂ = −3.0 μC, are separated by 0.30 m. Use k = 9.0×10⁹ N·m²/C².
(a)3 points
Calculate the magnitude of the force between them.
(b)1 point
State whether the force is attractive or repulsive and why.
(c)2 points
How does the force change if the separation is doubled?